Color: IT'S BLUE!
AUTOMATIC: with light & vibrancy sensors, automatically light up onLY when driving & in dark, and off when parking and in daytime
EZ Install in seconds: just replace your current valve stem cap with this set of caps and ready to go
FREE BATTERIES: 400 hrs long life standard watch batteries operated (6free batteries included)
High quality: aluminum and galvanized finished surface
BE COOL: Eye-catching! Play the lead in the dark!
FIT ALL SPINNING: good for Bicycles, Cars, motorcycles and other wheels that have valves